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Natal site affects elemental signatu...

Lloyd, Diana C.

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Natal site affects elemental signatures in Kelletia kelletii larval statoliths.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Natal site affects elemental signatures in Kelletia kelletii larval statoliths./
作者:	Lloyd, Diana C.
面頁冊數:	64 p.
附註:	Adviser: Danielle Zacherl.
Contained By:	Masters Abstracts International45-03.
標題:	Agriculture, Fisheries and Aquaculture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1440548

Natal site affects elemental signatures in Kelletia kelletii larval statoliths.
Lloyd, Diana C.

Natal site affects elemental signatures in Kelletia kelletii larval statoliths. - 64 p.

Adviser: Danielle Zacherl.

Thesis (M.S.)--California State University, Fullerton, 2007.

Elemental signatures have been used as a tool to track individuals to their natal site in an attempt to understand stock structure and larval dispersal. However, factors that affect elemental signatures are not well understood. I conducted a factorial experiment using Kelletia kelletii larvae from Salta Verde Pt., Catalina Island; Los Angeles Harbor; and White Point, Palos Verdes peninsula, California, USA to test the effects of egg source (natal site), temperature (10, 14, and 18°C), and seawater source on the elemental composition of larval statoliths. Intra-capsular contents of newly-laid capsules were analyzed to explore whether maternal contributions might affect larval statolith chemistry. Using inductively-coupled-plasma mass spectrometry, I quantified ratios of seven elements to calcium in both intra-capsular contents and cultured statoliths and provide the first evidence of significant natal site effects on statolith elemental signatures for Mg:Ca, Ba:Ca, and Pb:Ca. Intra-capsular and statolith element ratios were positively related, indicating possible maternal transfer of elements to larvae, though the relationship was not significant. Culture seawater elemental concentration was positively related to statolith Ba:Ca, Pb:Ca, and U:Ca, and temperature was negatively related to statolith Sr:Ca, Ba:Ca, and Pb:Ca, while no significant effects were found for Mn:Ca or Zn:Ca. Effect size estimates show that elements responded differently to factors within the variation measured in this study; the major effects for Ba and Pb were Temperature and Natal Site, respectively. The significant effect of natal site on elemental signatures has potentially important implications for tracking free-spawned larvae.Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Natal site affects elemental signatures in Kelletia kelletii larval statoliths.
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520 $a Elemental signatures have been used as a tool to track individuals to their natal site in an attempt to understand stock structure and larval dispersal. However, factors that affect elemental signatures are not well understood. I conducted a factorial experiment using Kelletia kelletii larvae from Salta Verde Pt., Catalina Island; Los Angeles Harbor; and White Point, Palos Verdes peninsula, California, USA to test the effects of egg source (natal site), temperature (10, 14, and 18°C), and seawater source on the elemental composition of larval statoliths. Intra-capsular contents of newly-laid capsules were analyzed to explore whether maternal contributions might affect larval statolith chemistry. Using inductively-coupled-plasma mass spectrometry, I quantified ratios of seven elements to calcium in both intra-capsular contents and cultured statoliths and provide the first evidence of significant natal site effects on statolith elemental signatures for Mg:Ca, Ba:Ca, and Pb:Ca. Intra-capsular and statolith element ratios were positively related, indicating possible maternal transfer of elements to larvae, though the relationship was not significant. Culture seawater elemental concentration was positively related to statolith Ba:Ca, Pb:Ca, and U:Ca, and temperature was negatively related to statolith Sr:Ca, Ba:Ca, and Pb:Ca, while no significant effects were found for Mn:Ca or Zn:Ca. Effect size estimates show that elements responded differently to factors within the variation measured in this study; the major effects for Ba and Pb were Temperature and Natal Site, respectively. The significant effect of natal site on elemental signatures has potentially important implications for tracking free-spawned larvae.
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